Drug interactions
Dexchlorpheniramine + Loxapine
Severity: Moderate
Dexchlorpheniramine and Loxapine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Both agents cause sedation and have anticholinergic activity, so the combination can cause greater drowsiness, impaired psychomotor performance, dry mouth, urinary retention, and confusion, especially in older patients.
What this interaction means in plain words
Dexchlorpheniramine and Loxapine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Dexchlorpheniramine belongs to Respiratory; Loxapine belongs to Central Nervous System.
Why it happens
Additive CNS depression through H1 antihistaminic and anticholinergic effects.
What to do
Warn patients about drowsiness and avoid driving or hazardous tasks until response is known. Consider a non-sedating antihistamine, particularly in elderly patients.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Loxapine
- Alfentanil + Loxapine Major
- Alprazolam + Loxapine Major
- Amisulpride + Loxapine Major
- Amoxapine + Loxapine Major
- Apomorphine + Loxapine Major
- Belladonna and opium + Loxapine Major
Other interactions of Dexchlorpheniramine
- Alprazolam + Dexchlorpheniramine Moderate
- Amisulpride + Dexchlorpheniramine Moderate
- Amitriptyline + Dexchlorpheniramine Moderate
- Amobarbital + Dexchlorpheniramine Moderate
- Asenapine + Dexchlorpheniramine Moderate
- Azelastine-fluticasone + Dexchlorpheniramine Moderate
Frequently asked questions
Can I take Dexchlorpheniramine with Loxapine?
MediHelp rates the interaction as moderate. Dexchlorpheniramine and Loxapine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Both agents cause sedation and have anticholinergic activity, so the combination can cause greater drowsiness, impaired psychomotor performance, dry mouth, urinary retention, and confusion, especially in older patients.
How serious is the interaction between Dexchlorpheniramine and Loxapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Warn patients about drowsiness and avoid driving or hazardous tasks until response is known. Consider a non-sedating antihistamine, particularly in elderly patients.
What other medicines interact with Loxapine?
MediHelp also lists interactions of Loxapine with, for example, Alfentanil, Alprazolam, Amisulpride. The full list is on the Loxapine page.
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